Linux-在没有硬件声卡的情况下，捕获音频回放并将其记录到文件中 [英] Linux - Without hardware soundcard, capture audio playback, and record it to file

问题描述

这样的事情有可能吗?

是否可以创建虚拟声卡，然后使用例如PyAudio监听其输出并将其保存到文件中?注意机器上没有硬件声卡.

Is there a possibility to create a virtual sound card and then use for example PyAudio to listen to its output and save it to a file? NOTE that there is no hardware soundcard present on the machine.

我尝试了很多事情，尤其是 snd-dummy ALSA模块，但是我开始怀疑我是否在寻找合适的工具.如果有人能指出我至少是高级解决方案，我将不胜感激.最好是可以在Ubuntu服务器上运行的东西.

I have tried a lot of things, especially snd-dummy ALSA module, but I am starting to doubt if I am looking for the right tools. I would be grateful if someone could point me towards at least high-level solution. Preferably something that would work on Ubuntu server.

推荐答案

由于@mjy和@Matthias的帮助，我终于设法找出了使录音工作所需的最少步骤:

Thanks to both @mjy and @Matthias I have finally managed to figure out the minimal steps to take in order to make the recording work:

sudo apt-get install pulseaudio jackd2 alsa-utils dbus-x11

无需使用 snd-dummy ，无需创建任何其他配置文件...所有这些仅使我损失了几个小时:(在干净的Ubuntu上安装了这些软件包之后服务器安装后，我能够运行Python脚本并使用PyAudio将输出音频捕获到文件中.

No need to play with snd-dummy, no need to create any additional config files... All these things only caused me to lose few hours :( After installing these packages on a clean Ubuntu server installation, I was able to run Python script and capture output audio to a file using PyAudio...

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